Du Zhongyu, Wang Shufeng, Xing Wenli, Xue Liang, Xiao Jiang, Chen Guangcai
Research Institute of Subtropical Forestry Chinese Academy of Forestry Hangzhou China.
Ecol Evol. 2024 Aug 23;14(8):e70212. doi: 10.1002/ece3.70212. eCollection 2024 Aug.
Understanding how plant functional traits respond to mining activities and impact metal(loid)s accumulation in dominant species is crucial for exploring the driving mechanisms behind plant community succession and predicting the ecological restoration potential of these plants. In this study, we investigated four dominant herbaceous species (, , , and ) growing on antimony (Sb) mining sites (MS) with high Sb and arsenic (As) levels, as well as non-mining sites (NMS). The aim was to analyze the variations in functional traits and their contribution to Sb and As concentrations in plants. Our results indicate that mining activities enhanced soil nitrogen (N) limitation and phosphorus (P) enrichment, while significantly reducing the plant height of three species, except for . The four species absorbed more calcium (Ca) to ensure higher tolerance to Sb and As levels, which is related to the activation of Ca signaling pathways and defense mechanisms. Furthermore, plant Sb and As concentrations were dependent on soil metal(loid) levels and plant element stoichiometry. Overall, these findings highlight the regulatory role of plant element traits in metal(loid) concentrations, warranting widespread attention and further study in the future.
了解植物功能性状如何响应采矿活动以及对优势物种中金属（类金属）积累的影响，对于探索植物群落演替背后的驱动机制以及预测这些植物的生态恢复潜力至关重要。在本研究中，我们调查了生长在锑（Sb）和砷（As）含量高的锑矿开采场地（MS）以及非开采场地（NMS）上的四种优势草本物种（、、、和）。目的是分析功能性状的变化及其对植物中Sb和As浓度的贡献。我们的结果表明，采矿活动加剧了土壤氮（N）限制和磷（P）富集，同时显著降低了三种物种的株高，除外。这四种物种吸收了更多的钙（Ca）以确保对Sb和As水平具有更高的耐受性，这与Ca信号通路和防御机制的激活有关。此外，植物中的Sb和As浓度取决于土壤金属（类金属）水平和植物元素化学计量。总体而言，这些发现突出了植物元素性状在金属（类金属）浓度中的调节作用，值得未来广泛关注和进一步研究。
